While typing in the reply box, I noticed that certain letters were being substituted with special characters: the lowercase 'a' becomes the greek letter alpha, lowercase 'th' becomes theta and uppercase 'I' becomes the Roman numeral one. When posting the reply, these characters get replaced by what I assume is the ASCII code:

&#618; confess this makes up for θe lame apocalypse.

I am using the latest Google Chrome browser on Ubuntu 12.10, if that helps. The problem seems limited to the reply boxes in the Games Forum.